Retaining ring



FIG. 1 is a top perspective view of a retaining ring of our invention;

FIG. 2 is a bottom perspective view of the retaining ring of FIG. 1 ;

FIG. 3 is a top view of the retaining ring of FIG. 1 ;

FIG. 4 is a front view of the retaining ring of FIG. 3 , with the back view being a mirror image thereof;

FIG. 5 is a bottom view of the retaining ring of FIG. 3 shown rotated with the mounting tab at the top and bottom of the retaining ring; and,

FIG. 6 is a front view of the retaining ring of FIG. 5 , with the opposing back view being a mirror image thereof. 

CLAIM The ornamental design for a retaining ring, as shown and described. 